https://bugs.gentoo.org/931096
https://www.qt.io/blog/security-advisory-qstringconverter
https://codereview.qt-project.org/c/qt/qtbase/+/556191
--- a/src/corelib/text/qstringconverter.cpp
+++ b/src/corelib/text/qstringconverter.cpp
@@ -1954,7 +1954,7 @@ struct QStringConverterICU : QStringConverter
         const void *context;
         ucnv_getToUCallBack(icu_conv, &action, &context);
         if (context != state)
-             ucnv_setToUCallBack(icu_conv, action, &state, nullptr, nullptr, &err);
+             ucnv_setToUCallBack(icu_conv, action, state, nullptr, nullptr, &err);
 
         ucnv_toUnicode(icu_conv, &target, targetLimit, &source, sourceLimit, nullptr, flush, &err);
         // We did reserve enough space:
@@ -1987,7 +1987,7 @@ struct QStringConverterICU : QStringConverter
         const void *context;
         ucnv_getFromUCallBack(icu_conv, &action, &context);
         if (context != state)
-             ucnv_setFromUCallBack(icu_conv, action, &state, nullptr, nullptr, &err);
+             ucnv_setFromUCallBack(icu_conv, action, state, nullptr, nullptr, &err);
 
         ucnv_fromUnicode(icu_conv, &target, targetLimit, &source, sourceLimit, nullptr, flush, &err);
         // We did reserve enough space: